岩土力学2013，Vol.34Issue(3)：827-832,6.
高速铁路膏溶角砾岩深埋隧道支护荷载确定方法
Method for determining supporting load of deep tunnel on high-speed railway in gypsum breccia stratum
摘要
Abstract
Reasonable method for determining supporting load of deep tunnel is a critical scientific problem during design and construction at present. Taihang mountain-tunnel goes through gypsum breccia region of about 4 410 meters on Shijiazhang-Taiyuan high-speed passenger railway. In situ experiments on supporting load were carried out to investigate statistical surrounding rock pressure of primary support and contact pressure of lining. According to Terzaghi theory, Bierbaumer theory, Xie Jia-xiu theory, Code of Design on Tunnel of Railway and M. M. Promojiyfakonov theory, surrounding rock pressure is calculated; and comparison between the theoretical values ;ind the monitoring data is made. The results show that surrounding rock pressure is dominated by vertical mainly. Calculation result by Terzaghi theory is mostly close to monitoring value. Obviously, vertical and horizontal distribution patterns are different from traditional calculation methods. Vertical pressure is recommended as double peak type or uniform distribution. Horizontal pattern is recommended as folded line type. Furthermore, primary support and lining bear load compatibly. The ratio of lining is about 50.1%. The results can provide references for construction of deep tunnel on high-speed railway in gypsum breccia stratum and similar geological tunnel.关键词
膏溶角砾岩/铁路隧道/围岩压力/荷载分配Key words
gypsum breccia/ railway tunnel/ surrounding rock pressure/ load distribution分类
交通工程引用本文复制引用
何本国,朱永全,孙明磊,张志强,孙元国..高速铁路膏溶角砾岩深埋隧道支护荷载确定方法[J].岩土力学,2013,34(3):827-832,6.基金项目
国家自然科学基金(No.50978172,No.51078318) （No.50978172,No.51078318）
新世纪优秀人才支持计划(No.NCET-10-0667). （No.NCET-10-0667）
